diff --git a/.github/workflows/appimage.yml b/.github/workflows/appimage.yml
index cc0d16b8f..ec724c379 100644
--- a/.github/workflows/appimage.yml
+++ b/.github/workflows/appimage.yml
@@ -28,7 +28,21 @@ jobs:
           echo "Running apt update."
           sudo apt update
           echo "Installing dependencies with apt."
-          DEBIAN_FRONTEND=noninteractive sudo apt install -y cmake libgtk-3-dev libgtkmm-3.0-dev liblensfun-dev librsvg2-dev liblcms2-dev libfftw3-dev libiptcdata0-dev libtiff5-dev libcanberra-gtk3-dev liblensfun-bin
+          DEBIAN_FRONTEND=noninteractive sudo apt install -y cmake libgtk-3-dev libgtkmm-3.0-dev liblensfun-dev librsvg2-dev liblcms2-dev libfftw3-dev libiptcdata0-dev libtiff5-dev libcanberra-gtk3-dev liblensfun-bin libexpat1-dev libbrotli-dev zlib1g-dev
+
+      - name: Install Exiv2
+        run: |
+          EXIV2_VERSION='v0.27.6'
+          echo "Cloning Exiv2 $EXIV2_VERSION."
+          git clone --depth 1 --branch "$EXIV2_VERSION" https://github.com/Exiv2/exiv2.git ext/exiv2
+
+          echo "Configuring build."
+          mkdir ext/exiv2/build
+          cd ext/exiv2/build
+          cmake -DCMAKE_BUILD_TYPE=Release -DEXIV2_ENABLE_BMFF=ON ..
+
+          echo "Building and installing."
+          sudo make -j$(nproc) install
 
       - name: Configure build
         run: |
@@ -111,6 +125,9 @@ jobs:
       - name: Package AppImage
         working-directory: ./build
         run: |
+          echo "LD_LIBRARY_PATH is '$LD_LIBRARY_PATH'. Adding /usr/local/lib."
+          export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+
           echo "Creating artifact name."
           if [ '${{github.ref_type}}' == 'tag' ]; then
             ARTIFACT_NAME="RawTherapee_${REF_NAME_FILTERED}_${{matrix.build_type}}"
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index b90d30e27..d3b3244b4 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -35,7 +35,7 @@ jobs:
           echo "Running apt update."
           sudo apt update
           echo "Installing dependencies with apt."
-          DEBIAN_FRONTEND=noninteractive sudo apt install -y cmake libgtk-3-dev libgtkmm-3.0-dev liblensfun-dev librsvg2-dev liblcms2-dev libfftw3-dev libiptcdata0-dev libtiff5-dev libcanberra-gtk3-dev liblensfun-bin
+          DEBIAN_FRONTEND=noninteractive sudo apt install -y cmake libgtk-3-dev libgtkmm-3.0-dev liblensfun-dev librsvg2-dev liblcms2-dev libfftw3-dev libiptcdata0-dev libtiff5-dev libcanberra-gtk3-dev liblensfun-bin libexiv2-dev
 
       - name: Configure build
         run: |
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 11ae28aa4..7b0df3ac3 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -21,7 +21,7 @@ jobs:
            mkdir build
            date +%s > build/stamp
            brew uninstall --ignore-dependencies libtiff
-           brew install libtiff gtk+3 gtkmm3 gtk-mac-integration adwaita-icon-theme libsigc++@2 little-cms2 libiptcdata fftw lensfun expat pkgconfig llvm shared-mime-info | tee -a depslog
+           brew install libtiff gtk+3 gtkmm3 gtk-mac-integration adwaita-icon-theme libsigc++@2 little-cms2 libiptcdata fftw lensfun expat pkgconfig llvm shared-mime-info exiv2 | tee -a depslog
            date -u
            echo "----====Pourage====----"
            cat depslog | grep Pouring
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index ab81edec6..3b9791865 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -45,6 +45,7 @@ jobs:
             mingw-w64-x86_64-fftw
             mingw-w64-x86_64-lensfun
             mingw-w64-x86_64-libiptcdata
+            mingw-w64-x86_64-exiv2
 
       - name: Configure build
         run: |